In his first-ever interview, the sole Australian survivor of the Waco siege has revealed to 60 Minutes what really took place during the 51-day stand-off, and why he believes crazed cult leader David Koresh will one day return to Earth as the son of God.

Search will continue today at Thorton Beach for woman who was attacked by croc

A woman attacked by a crocodile on a beach in far north Queensland screamed "a croc's got me" as her best friend fought to save her from the jaws of the reptile.

Leeann Mitchell, 47, tried to drag NSW-based photographer Cindy Waldron, 46, onto the shore of Thornton Beach in the Daintree National Park late on Sunday night but couldn't stop the croc from dragging her under the water, The Daily Telegraph reports.

Ms Mitchell ran to a local business to get help and later received medical treatment herself for shock and grazes.

Police and SES volunteers conducted a large-scale land, air and sea search yesterday but failed to find any trace of New Zealand-born Ms Waldron, who had been living in the NSW town of Lithgow for several years.

Acting Inspector Ed Lukin said yesterday afternoon a five-metre crocodile had been spotted in the area on Sunday, before the attack.

Police have praised Ms Mitchell risking her life trying to save her friend.

"Her 47-year-old friend tried to grab her and drag her to safety and she just wasn't able to do that," Senior Constable Russell Parker told ABC Radio.